Credit to Bounty, even the tube part,we just stood it off to let the junk fall thru, here goes. 4 x 4 x 1/4" angle.You need 10' total. Mark in place,then cut to wacky angles with plasma torch. Drill 8 oversized 3/8" holes. 10' of 1 1/2" square x 1/4" wall steel tube. We have a cold saw so the...